The current research aimed to identify the effectiveness of a proposed program based on social-scientific issues in developing the skills of generative thinking and dialectical decision-making among the students of the Biology Division at the Faculty of Education, Zagazig University. The proposed program was taught to the research sample, and after its completion, the research tools were applied post-test, and the data was processed using appropriate statistical methods, and the results resulted in a statistically significant difference at the level (0.01) between the average scores of the research group members in the pre and post applications of the generative thinking test as a whole and its sub-skills separately in favor of the post application, and the presence of a statistically significant difference at the level (0.01) between the average scores of the research group members in the pre and post applications of the dialectical decision-making scale as a whole and its skills In addition, a positive correlation was found between the students' scores in the generative thinking test and the student's scores in the Dialectical Decision-Making Scale, and some recommendations and proposals were presented in the light of the results that were reached. Keywords: Socio-scientific Issues- Generative thinking Skills- argumentative decision-making Skills. .